How to get a consistent encryption result with Python?

Question

I want to generate consistent encryption results for the same msg every time. Currently, I am getting different encryption results.

I am doing something like this

from cryptography.fernet import Fernet

key = Fernet.generate_key()
f = Fernet(key)
token = f.encrypt(b"A really secret message. Not for prying eyes.")
print(token)

# b'gAAAAABfh2ghAoFbQ_MUqdTAs7n__Pz2cOkDeYuMbDOGFa6NSL3Ld_seLIPOs4ztvTW888Y_1CSrFlk_mioSe-rP5TVhFXFfwHYTiLQ4ldTlttXWwoACQhjsMR5vPEWQcEj_5oEWmciV'

token = f.encrypt(b"A really secret message. Not for prying eyes.")
print(token)

# b'gAAAAABfh2gh56xzic644KRb0MEXuttUAEtFGH3ewdblPK40biRuZ7iQcGBVQ4XT9uLrFFSHsiWl9Tdyl2TAyzGwMqHFUcrA0ZO4qqTTKp364UY6tcwcnF2JSLc0hGPjcX5bqD5Ghpn0'

token = f.encrypt(b"A really secret message. Not for prying eyes.")
print(token)

# b'gAAAAABfh2gho82P0yCC9KagQnLO0QrPm2sQBcWeiVFx45IP2IZlTyB0bfZPubu1NAYZ1aQ6S4DoASU7vMqzrd8Bbe9hicFjXwPSBKMzVWkf_BLZZNqoB4EdeOE0x5NQGB-aEctzPfEZ'

I expect every time the input string is the same token, the result should be the same. Also, if there is a better and easier plugin, kindly recommend.

Answer 1

Not all tokens have to be the same because Fernet's encrypt module's code is:

def encrypt(self, data):
    return self.encrypt_at_time(data, int(time.time()))

in fernet.py

It means encryption depends on time. Therefore tokens are different from each other.